EP0059500B1 - Ballast cleaning machine running on tracks - Google Patents

Ballast cleaning machine running on tracks Download PDF

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Publication number
EP0059500B1
EP0059500B1 EP82200186A EP82200186A EP0059500B1 EP 0059500 B1 EP0059500 B1 EP 0059500B1 EP 82200186 A EP82200186 A EP 82200186A EP 82200186 A EP82200186 A EP 82200186A EP 0059500 B1 EP0059500 B1 EP 0059500B1
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EP
European Patent Office
Prior art keywords
screen
screens
ballast
vibrating screen
vibrating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82200186A
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German (de)
French (fr)
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EP0059500A1 (en
Inventor
Ivo Cicin-Sain
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Matisa Materiel Industriel SA
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Matisa Materiel Industriel SA
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Priority to AT82200186T priority Critical patent/ATE9917T1/en
Publication of EP0059500A1 publication Critical patent/EP0059500A1/en
Application granted granted Critical
Publication of EP0059500B1 publication Critical patent/EP0059500B1/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B27/00—Placing, renewing, working, cleaning, or taking-up the ballast, with or without concurrent work on the track; Devices therefor; Packing sleepers
    • E01B27/06—Renewing or cleaning the ballast in situ, with or without concurrent work on the track
    • E01B27/10—Renewing or cleaning the ballast in situ, with or without concurrent work on the track without taking-up track

Definitions

  • the present invention relates to a mobile machine on tracks, for the purification of ballast from railways, comprising a screening plant for the ballast preferably equipped with two superimposed sieves and conveyor belts for transporting the ballast and materials to be evacuated .
  • Machines for purifying the ballast equipped with a vibrating screen are known in many forms (for example patents CH 309 855 and CH 562 918).
  • the screening installation consists of an inclined vibrating screen, having two superimposed sieves of different mesh size, driven in vibration by a flywheel, the refined ballast, ready to be reused, accumulating on the lower sieve for then be conveyed, by means of a conveyor belt, to the places of repositioning, the excessively large materials remaining on the upper screen, while the too small materials pass through the lower screen and are evacuated to be discharged.
  • Known vibrating screens have a typical capacity of about 800 m 3 / h, the screen drive motor rotating at a speed of about 100 rpm corresponding to an oscillation frequency of about 100 Hz, l maximum authorized amplitude of oscillation being of the order of 12 mm.
  • the amplitude of oscillation and the frequency of oscillation cannot be increased, for reasons of permissible load on the machine, it is not possible to increase the capacity of the machine without further although this is desirable for achieve as high a working speed as possible.
  • the present invention aims to achieve a screening installation having a more favorable operation making it possible to achieve a greater capacity and a more flexible adaptation of the factors determining the purification and the transport of the ballast to the working conditions and making it possible to reduce the stresses of the machine frame.
  • the machine according to the invention is characterized in that the screening installation comprises at least two vibrating screens mounted one behind the other and independently of one another on the frame of the machine, each being driven by its own drive device, these drive devices being controllable independently of one another and being able to be engaged and triggered one after the other.
  • the instants of engagement and of triggering, the frequencies and / or the amplitudes of oscillations of the screens, as well as their inclinations can be chosen individually and in a differentiated manner for each screen so as to be adapted to the working conditions of each of the screens.
  • the invention further makes it possible to lower the requirements as regards the stability and the resistance of the machine to vibrations, which corresponds to a general tendency to build machines as light as possible.
  • the screening installation is advantageously carried out in such a way that the end of the screens, exit side, of the first screen covers the end, entry side, of the screens of the second screen, respectively of the following screen, so the ballast leaving the first screen falls directly on the second screen, respectively the next screen.
  • the machine moving in the direction of the arrow, FIG. 1, comprises a front chassis 1 provided with two bogies 3 and 4 and a rear chassis 2 connected at its front end to the chassis 1 by an articulation 9.
  • the boggies 3 and 4 of the chassis 1 rest on track 6, in front of the working place proper, tracks which are fixed in a well-known manner on crosspieces 7 resting on the ballast 8, while the bogie 5 of the rear chassis rolls on the track back of the workplace.
  • an excavator chain 10 for removing the ballast which has, seen from above, a known trajectory of approximately triangular shape and a section 11 passing transversely under the tracks 6 and the crosspieces 7.
  • the two sections ascending of the excavating chain 10 pass over a hopper 12 in which the ballast is discharged and through which it falls on a conveyor belt 13, which leads the ballast to be purified in the direction of movement of the machine all first in an oblique upward movement then horizontally on another conveyor belt 14 which brings the ballast to the purification installation.
  • the purification installation consists of a screening installation 15 mounted on the chassis 1 and equipped with two vibrating screens 16 and 17, mounted one behind the other, inclined in the opposite direction to the direction of advance of the machine and which are mounted on vertical supports 18, 19 and 20 by means of helical springs 21, 22 and the construction of which will be described in more detail with reference to FIGS. 2 to 4.
  • the conveyor belt 14 extends to the above the screening installation 15 up to the entry of the latter at the upper end of the first screen 16, so that the ballast falls first in the first screen 16 and then passes into the second screen 17.
  • the two vibrating screens 16 and 17 have, in a manner known per se, two superimposed sieves of different mesh size, so that the refined ballast, ready to be reused, accumulates on the lower sieve of where it is discharged on a conveyor belt 23 to the delivery means in place.
  • the materials of too large dimension which do not pass through the upper sieve, as well as the materials of too small dimension and the detritus having crossed the two sieves end up on a conveyor belt of evacuation 28 located under the screening plant 15, which unload on another conveyor belt 29 which discharges them towards the front of the machine, where they are either unloaded in a wagon or on the side of the track.
  • ballast transported by the conveyor belt 23 in the opposite direction to the direction of movement of the machine is brought into the zone of the excavator chain 12 where it falls on a distribution device 24.
  • a part of this ballast is discharged onto the track by a hopper 25 of the device 24, immediately behind the place where the excavator works, indicated by P1 in FIG. 1, to replace the removed ballast. It is then and immediately flattened and compacted by means of a device 30.
  • the remaining ballast is discharged by a second hopper 26 from the device 24 on a dispensing tape 27 which can pivot transversely around its anterior end, in a known manner, which transports the ballast one end towards the rear of the machine where it discharges onto the already worked ballast, at location P2, essentially on each side.
  • the distribution device 24 is equipped with a controlled distribution member, for example a valve, by means of which a determined part of the purified ballast, corresponding to the depth of excavation and to the desired height of the new ballast, is deflected in the hopper 25, while the rest of the ballast flows into hopper 26.
  • a controlled distribution member for example a valve
  • Known lifting devices 32 make it possible to adjust the working height of the excavator chain 10.
  • FIGS. 2 to 4 The construction and arrangement of the two vibrating screens 16 and 17 are shown in more detail, but diagrammatically in FIGS. 2 to 4.
  • the ballast to be purified falls from the conveyor tape 14 in the direction of the curved arrow in the entrance of the screen at the left end of the drawing.
  • the first screen 16 which has an upper screen 40 and a lower screen 41, is not located exactly in line with the second screen 17, provided with an upper screen 42 and a lower screen 43, but it is slightly vertically offset relative to the second screen 17, so that the outlet of the first screen 16, that is to say the edges of the screens 40 and 41, covers slightly and respectively the upper ends of the screens 42 and 43 of the screen 17, with a clearance of course sufficient so that the two screens do not come into contact when they vibrate, the ballast leaves both the screens 40 and 41 thus directly falling on the screens 42 and 43 respectively.
  • the two vibrating screens 16 and 17 are supported on each side, freely oscillating, by helical springs 21, respectively 22 supported themselves by the supports 18, 19 and 20. Instead of helical springs it is possible to use blocks rubber.
  • the front support 18 and the rear support 20 are equipped with lifting devices 52, respectively 53 allowing their height to be modified and therefore the individual inclination of each of the screens 16 and 17, acting on their opposite ends, the height of the superimposed ends of the two screens being fixed.
  • each screen 16 and 17 are crossed, approximately in the middle, by a shaft 44, respectively 45, the ends of which carry an unbalance 46, respectively 47, driven in rotation by a motor 48, respectively 49 via a belt 50, respectively 51.
  • FIG. 3 represents, in its lower half, a top view of the upper screens 41 and 42 and in its upper half a view of the lower screens 41 and 42.
  • the screens are covered by an extension 40a, 41a respectively, of the screen proper 40, respectively 41.
  • Baffle plates 54 of the upper screen 42 of the screen 17 (fig. 3 and 4) deflects aside the materials too large to be evacuated, so that they can fall, on each side of the zone median occupied by the outlet of the lower screen 43, on the evacuation conveyor belt 28, onto which also fall the materials having passed through the lower screens 41 and 43.
  • the lower screen 43 of the screen 17 has at its end on the outlet side a deflector plate 55 directed inwards, which directs the ballast to be reused towards a hopper 56 by which it falls on the conveyor belt 23, as shown diagrammatically in FIG. 2.
  • the width of the hopper 56 mounted in the central area of the screen outlet is less than the width of the upper screen 42 by a value such that the large waste discharged from the upper screen can fall on each side of the hopper 56 onto the conveyor belt. evacuation 28.
  • FIG. 4 which shows a front view, on the outlet side, of the screen, the conveyor belt 14, the discharge ribbon 28, the screen drive motors 48 and 49, as well as the supports 18, 19 and 20 n have not been represented.
  • the drive belts 51 and 52, driving the shafts 44 and 45, are shown in section.
  • the upper screen 40 of the screen 16 below it the upper screen 42 of the screen 17 and lower, at the hopper 56, the lower screen 43 of the screen 17 .
  • the arrangement of the screens has the advantage that each of the screens 16 and 17 can be driven individually and in that for each of the screens relatively small masses must be accelerated and kept in motion.
  • Individual training by means of two independent motors 48 and 49 practically excludes a synchronous vibration of the two screens 16 and 17, so that in general the forces generated by each of the screens on the frame 1 of the machine more or less neutralize each other. less, advantageously.
  • the arrangement has in particular the advantage of making it possible to control the two vibrating screens separately, so that during startup, it is possible to switch on first the second screen 17, then, after a certain time, for example about 30 seconds, to switch on the first screen 16.
  • the first screen 16 is stopped, then after a certain time, for example about 30 seconds, the second screen 17 is stopped in turn.
  • the masses to be accelerated, respectively to be braked are half as large as in known installations comprising a single screen, which is particularly important when the screens are working at full load. Chassis stresses are reduced.
  • two smaller and lighter screens can work with larger amplitudes of oscillation and / or a higher oscillation frequency than a single screen with a corresponding load.
  • the maximum amplitude of oscillation has generally been of the order of 12 mm, whereas it may be of the order of 16 mm with the installation according to the invention. It is thus possible to reach a screening yield of the order of 1000 m 3 / h whereas this yield was previously of the order of 800 m 3 / h.
  • the two screens 16 and 17 of the installation according to the invention can be, if necessary, driven at different frequencies and / or with different amplitudes. It is also possible, if necessary, to give a different inclination to each of the screens 16 and 17.
  • the screening installation according to the invention therefore not only makes it possible to build vibrating screens smaller than hitherto, but also allows individual screen training, both in terms of frequency and amplitude of oscillation and inclination, depending on the nature of the ballast to be cleaned and the working conditions, which allows optimum performance to be achieved.
  • the invention is not limited to the embodiment shown, but extends to many variants, as regards the execution and the arrangement of the vibrating screens. These can in particular have more than two superimposed sieves. It is also possible to provide more than two screens mounted one behind the other, but it seems that two screens are sufficient, for practical and economic reasons, to obtain the desired advantages.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Discharge Heating (AREA)

Abstract

1. Railway ballast cleaning machine adapted to travel on rails, with a vibrating screen arrangement (15) for cleaning the ballast, preferably with two spaced superposed perforated bottoms (40, 41), and with belt conveyors (13, 14, 28, 29) for transporting the ballast and the waste, characterized in that the vibrating screen arrangement (15) comprises at least two vibrating screens (16, 17) mounted in series and independently of each other to the machine frame (1) and each being driven by its own drive means (48, 49), said drive means are adapted to be controlled independently of each other and to be cut on and cut off successively.

Description

La présente invention a pour objet une machine mobile sur voies, pour l'épuration du ballast des voies ferrées, comprenant une installation de criblage du ballast équipée de préférence de deux tamis superposés et des rubans transporteurs pour le transport du ballast et des matériaux à évacuer.The present invention relates to a mobile machine on tracks, for the purification of ballast from railways, comprising a screening plant for the ballast preferably equipped with two superimposed sieves and conveyor belts for transporting the ballast and materials to be evacuated .

Des machines pour l'épuration du ballast équipées d'un crible vibrant sont connues sous de nombreuses formes (par exemple brevets CH 309 855 et CH 562 918). Dans ces machines, l'installation de criblage consiste en un crible vibrant incliné, présentant deux tamis superposés de grandeur de maille différente, entraîné en vibration par un volant, le ballast épuré, prêt à être réutilisé, s'accumulant sur le tamis inférieur pour être ensuite conduit, au moyen d'un ruban transporteur, aux endroits de remise en place, les matériaux trop gros restant sur le tamis supérieur, tandis que les matériaux trop petits traversent le tamis inférieur et sont évacués pour être déchargés.Machines for purifying the ballast equipped with a vibrating screen are known in many forms (for example patents CH 309 855 and CH 562 918). In these machines, the screening installation consists of an inclined vibrating screen, having two superimposed sieves of different mesh size, driven in vibration by a flywheel, the refined ballast, ready to be reused, accumulating on the lower sieve for then be conveyed, by means of a conveyor belt, to the places of repositioning, the excessively large materials remaining on the upper screen, while the too small materials pass through the lower screen and are evacuated to be discharged.

Ces cribles vibrants présentent longitudinalement des dimensions relativement grandes afin de disposer d'un chemin de criblage assez long pour assurer une épuration totale. Les grandes dimensions du crible et le poids élevé du crible complètement chargé de ballast ont toutefois pour inconvénient qu'il est nécessaire d'accélérer et de déplacer des masses très importantes. L'amplitude d'oscillation et la fréquence d'oscillation du crible, qui déterminent essentiellement la capacité de criblage, ne peuvent être choisies qu'aussi élevées que le permettent la stabilité et la résistance du bâti de la machine aux efforts développés par les masses entraînées en vibration. Les sollicitations développées pendant la mise en route du crible chargé et au moment de son arrêt, après le déclenchement du moteur d'entraînement, jusqu'à l'arrêt, se sont avérées particulièrement critiques. Le temps de mise en route et le temps d'arrêt d'un crible chargé est de l'ordre de 30 secondes ou davantage. Chaque fois que la machine ou le wagon d'épuration, qui normalement avance de façon continue, doit être stoppé pour une raison ou l'autre, le crible vibrant doit être dans la règle déclenché et n'être réen- clenché que lorsque la machine reprend son avance. Les sollicitations susmentionnées du bâti de la machine pendant la mise en route et l'arrêt du crible chargé peuvent par conséquent apparaître relativement fréquemment.These vibrating screens have relatively large dimensions longitudinally in order to have a screening path long enough to ensure total purification. The large dimensions of the screen and the high weight of the screen fully loaded with ballast, however, have the disadvantage that it is necessary to accelerate and move very large masses. The amplitude of oscillation and the frequency of oscillation of the screen, which essentially determine the screening capacity, can only be chosen as high as the stability and resistance of the machine frame to the forces developed by the masses allow. driven in vibration. The stresses developed during the start-up of the loaded screen and at the time of its stop, after the triggering of the drive motor, until stop, proved to be particularly critical. The start-up time and the stop time of a loaded screen is of the order of 30 seconds or more. Whenever the sewage treatment machine or wagon, which normally advances continuously, must be stopped for some reason, the vibrating screen must be triggered and must not be re-engaged until the machine resumes its lead. The above-mentioned stresses on the machine frame during start-up and stop of the loaded screen can therefore appear relatively frequently.

Les cribles vibrants connus ont une capacité type d'environ 800 m3/h, le moteur d'entraînement du crible tournant à une vitesse d'environ 100 T/min correspondant à une fréquence d'oscillation d'environ 100 Hz, l'amplitude d'oscillation maximale autorisée étant de l'ordre de 12 mm. Comme l'amplitude d'oscillation et la fréquence d'oscillation ne peuvent être augmentées, pour des raisons de sollicitation admissible de la machine, il n'est pas possible d'augmenter sans autre la capacité de la machine bien que ceci soit désirable pour atteindre une vitesse de travail aussi élevée que possible.Known vibrating screens have a typical capacity of about 800 m 3 / h, the screen drive motor rotating at a speed of about 100 rpm corresponding to an oscillation frequency of about 100 Hz, l maximum authorized amplitude of oscillation being of the order of 12 mm. As the amplitude of oscillation and the frequency of oscillation cannot be increased, for reasons of permissible load on the machine, it is not possible to increase the capacity of the machine without further although this is desirable for achieve as high a working speed as possible.

La présente invention vise à réaliser une installation de criblage présentant un fonctionnement plus favorable permettant d'atteindre une plus grande capacité et une adaptation plus flexible des facteurs déterminant l'épuration et le transport du ballast aux conditions de travail et permettant de réduire les sollicitations du bâti de la machine.The present invention aims to achieve a screening installation having a more favorable operation making it possible to achieve a greater capacity and a more flexible adaptation of the factors determining the purification and the transport of the ballast to the working conditions and making it possible to reduce the stresses of the machine frame.

A cet effet, la machine selon l'invention est caractérisée en ce que l'installation de criblage comprend au moins deux cribles vibrants montés l'un derrière l'autre et indépendamment l'un de l'autre sur le bâti de la machine, chacun étant entraîné par son propre dispositif d'entraînement, ces dispositifs d'entraînement étant commandables indépendamment l'un de l'autre et pouvant être enclenchés et déclenchés l'un après l'autre.To this end, the machine according to the invention is characterized in that the screening installation comprises at least two vibrating screens mounted one behind the other and independently of one another on the frame of the machine, each being driven by its own drive device, these drive devices being controllable independently of one another and being able to be engaged and triggered one after the other.

Il est ainsi possible de réduire les masses accélérées et entraînées en vibration simultanément et de manière synchrone, en particulier de réduire ces masses approximativement de moitié en utilisant deux cribles vibrants montés l'un derrière l'autre, solution avantageuse sur le plan technique et économique, de telle sorte que les forces nécessaires à l'entraînement de chacun des cribles, et avant tout les vibrations transmises par chacun des cribles à la machine, sont sensiblement réduites. Il est dès lors possible d'entraîner des cribles plus petits avec des amplitudes et/ou des fréquences d'oscillations plus élevées et d'obtenir ainsi une installation de criblage d'un rendement supérieur à celui des machines comportant un seul grand crible.It is thus possible to reduce the accelerated masses and driven in vibration simultaneously and synchronously, in particular to reduce these masses approximately by half by using two vibrating screens mounted one behind the other, advantageous solution on the technical and economic plan. , so that the forces required to drive each of the screens, and above all the vibrations transmitted by each of the screens to the machine, are significantly reduced. It is therefore possible to train smaller screens with higher amplitudes and / or frequencies of oscillation and thus obtain a screening plant with a higher yield than machines with a single large screen.

En particulier, les instants d'enclenchement et de déclenchement, les fréquences et/ou les amplitudes d'oscillations des cribles, ainsi que leurs inclinaisons peuvent être choisis individuellement et de façon différenciée pour chaque crible de manière à être adaptés aux conditions de travail de chacun des cribles. En cas d'arrêt temporaire d'une machine à deux cribles, il est en particulier possible d'arrêter tout d'abord le premier crible, puis ensuite le second après un certain temps, et de remettre en route tout d'abord le second crible, puis le premier après un certain temps, les sollicitations critiques de la machine durant ces périodes d'arrêt et de remise en route étant ainsi sensiblement réduites. L'invention permet en outre d'abaisser les exigences en ce qui concerne la stabilité et la résistance de la machine envers les vibrations, ce qui correspond à une tendance générale de construire des machines aussi légères que possible.In particular, the instants of engagement and of triggering, the frequencies and / or the amplitudes of oscillations of the screens, as well as their inclinations can be chosen individually and in a differentiated manner for each screen so as to be adapted to the working conditions of each of the screens. In the event of a temporary shutdown of a machine with two screens, it is in particular possible to stop the first screen first, then the second after a certain time, and to restart the second first. screen, then the first after a certain time, the critical stresses of the machine during these periods of stopping and restarting being thus significantly reduced. The invention further makes it possible to lower the requirements as regards the stability and the resistance of the machine to vibrations, which corresponds to a general tendency to build machines as light as possible.

L'installation de criblage est avantageusement réalisée de telle sorte que l'extrémité des tamis, côté sortie, du premier crible recouvre l'extrémité, côté entrée, des tamis du second crible, respectivement du crible suivant, de telle sorte que le ballast quittant le premier crible tombe directement sur le second crible, respectivement le crible suivant.The screening installation is advantageously carried out in such a way that the end of the screens, exit side, of the first screen covers the end, entry side, of the screens of the second screen, respectively of the following screen, so the ballast leaving the first screen falls directly on the second screen, respectively the next screen.

Le dessin annexé représente, à titre d'exemple, une forme d'exécution de la machine selon l'invention.

  • La figure 1 est une vue latérale de la machine.
  • La figure 2 est une vue de détail, schématique, de l'installation de criblage à deux cribles vibrants.
  • La figure 3 est une vue de dessus de l'installation de criblage, la moitié supérieure de la figure représentant les tamis inférieurs et la moitié inférieure de la figure les tamis supérieurs.
  • La figure 4 est une vue frontale de l'installation de criblage selon la flèche IV, figure 2.
The accompanying drawing shows, by way of example, an embodiment of the machine according to the invention.
  • Figure 1 is a side view of the machine.
  • Figure 2 is a detailed schematic view of the screening plant with two vibrating screens.
  • Figure 3 is a top view of the screening plant, the upper half of the figure showing the lower screens and the lower half of the figure the upper screens.
  • FIG. 4 is a front view of the screening installation according to arrow IV, FIG. 2.

La machine se déplaçant dans la direction de la flèche, figure 1, comprend un châssis antérieur 1 muni de deux boggies 3 et 4 et un châssis postérieur 2 relié à son extrémité antérieure au châssis 1 par une articulation 9. Les boggies 3 et 4 du châssis 1 reposent sur la voie 6, en avant de la place de travail proprement dite, voies qui sont fixées de manière bien connue sur des traverses 7 reposant sur le ballast 8, tandis que le boggie 5 du châssis postérieur roule sur la voie en arrière de l'endroit de travail.The machine moving in the direction of the arrow, FIG. 1, comprises a front chassis 1 provided with two bogies 3 and 4 and a rear chassis 2 connected at its front end to the chassis 1 by an articulation 9. The boggies 3 and 4 of the chassis 1 rest on track 6, in front of the working place proper, tracks which are fixed in a well-known manner on crosspieces 7 resting on the ballast 8, while the bogie 5 of the rear chassis rolls on the track back of the workplace.

Sur le châssis postérieur 2 est montée une chaîne excavatrice 10 pour l'enlèvement du ballast, qui présente, vue de dessus, une trajectoire connue de forme approximativement triangulaire et une section 11 passant transversalement sous les voies 6 et les traverses 7. Les deux sections ascendantes de la chaîne excavatrice 10 passent au-dessus d'une trémie 12 dans laquelle le ballast est déchargé et à travers laquelle il tombe sur un ruban transporteur 13, qui conduit le ballast à épurer dans la direction de déplacement de la machine tout d'abord selon un mouvement ascendant oblique puis horizontalement sur un autre ruban transporteur 14 qui amène le ballast à l'installation d'épuration.On the rear frame 2 is mounted an excavator chain 10 for removing the ballast, which has, seen from above, a known trajectory of approximately triangular shape and a section 11 passing transversely under the tracks 6 and the crosspieces 7. The two sections ascending of the excavating chain 10 pass over a hopper 12 in which the ballast is discharged and through which it falls on a conveyor belt 13, which leads the ballast to be purified in the direction of movement of the machine all first in an oblique upward movement then horizontally on another conveyor belt 14 which brings the ballast to the purification installation.

L'installation d'épuration est constituée d'une installation de criblage 15 montée sur le châssis 1 et équipée de deux cribles vibrant 16 et 17, montés l'un derrière l'autre, inclinés en sens opposé au sens d'avance de la machine et qui sont montés sur des supports verticaux 18, 19 et 20 par l'intermédiaire de ressorts hélicoïdaux 21, 22 et dont la construction sera décrite plus en détail en relation avec les figures 2 à 4. Le ruban transporteur 14 s'étend au-dessus de l'installation de criblage 15 jusqu'à l'entrée de celle-ci à l'extrémité supérieure du premier crible 16, de telle sorte que le ballast tombe tout d'abord dans le premier crible 16 pour passer ensuite dans le second crible 17. Les deux cribles vibrants 16 et 17 présentent, de manière connue en soi, deux tamis superposés de grandeur de maille différente, de telle sorte que le ballast épuré, prêt à être réutilisé, s'accumule sur le tamis inférieur d'où il est déchargé sur un ruban transporteur 23 vers les moyens de remise en place. Les matériaux de trop grande dimension qui ne traversent pas le tamis supérieur, ainsi que les matériaux de trop petite dimension et les détritus ayant traversés les deux tamis aboutissent sur un ruban transporteur d'évacuation 28 situé sous l'installation de criblage 15, qui les déchargent sur un autre ruban transporteur 29 qui les évacuent vers l'avant de la machine, où ils sont soit déchargés dans un wagon ou sur le côté de la voie.The purification installation consists of a screening installation 15 mounted on the chassis 1 and equipped with two vibrating screens 16 and 17, mounted one behind the other, inclined in the opposite direction to the direction of advance of the machine and which are mounted on vertical supports 18, 19 and 20 by means of helical springs 21, 22 and the construction of which will be described in more detail with reference to FIGS. 2 to 4. The conveyor belt 14 extends to the above the screening installation 15 up to the entry of the latter at the upper end of the first screen 16, so that the ballast falls first in the first screen 16 and then passes into the second screen 17. The two vibrating screens 16 and 17 have, in a manner known per se, two superimposed sieves of different mesh size, so that the refined ballast, ready to be reused, accumulates on the lower sieve of where it is discharged on a conveyor belt 23 to the delivery means in place. The materials of too large dimension which do not pass through the upper sieve, as well as the materials of too small dimension and the detritus having crossed the two sieves end up on a conveyor belt of evacuation 28 located under the screening plant 15, which unload on another conveyor belt 29 which discharges them towards the front of the machine, where they are either unloaded in a wagon or on the side of the track.

Le ballast épuré transporté par le ruban transporteur 23 en sens inverse du sens de déplacement de la machine est amené dans la zone de la chaîne excavatrice 12 où il tombe sur un dispositif de distribution 24. Une partie de ce ballast est déchargée sur la voie par une trémie 25 du dispositif 24, immédiatement derrière l'endroit où travaille l'excavatrice, indiqué parP1 à la figure 1, pour remplacer le ballast enlevé. Il est ensuite et immédiatement aplani et compacté au moyen d'un dispositif 30. Le ballast restant est déchargé par une seconde trémie 26 du dispositif 24 sur un ruban distributeur 27 pouvant pivoter transversalement autour de son extrémité antérieure, de manière connue, lequel transporte le ballast un bout vers l'arrière de la machine où il décharge sur le ballast déjà travaillé, à l'endroit P2, essentiellement de chaque côté. Au lieu d'un seul ruban distributeur 27, il est possible de prévoir deux rubans distributeurs de chaque côté de la machine. Le dispositif de distribution 24 est équipé d'un organe de distribution commandé, par exemple un clapet, au moyen duquel une partie déterminée du ballast épuré, correspondant à la profondeur d'excavation et à la hauteur désirée du nouveau ballast, est déviée dans la trémie 25, tandis que le reste du ballast s'écoule dans la trémie 26.The clean ballast transported by the conveyor belt 23 in the opposite direction to the direction of movement of the machine is brought into the zone of the excavator chain 12 where it falls on a distribution device 24. A part of this ballast is discharged onto the track by a hopper 25 of the device 24, immediately behind the place where the excavator works, indicated by P1 in FIG. 1, to replace the removed ballast. It is then and immediately flattened and compacted by means of a device 30. The remaining ballast is discharged by a second hopper 26 from the device 24 on a dispensing tape 27 which can pivot transversely around its anterior end, in a known manner, which transports the ballast one end towards the rear of the machine where it discharges onto the already worked ballast, at location P2, essentially on each side. Instead of a single dispenser tape 27, it is possible to provide two dispenser tapes on each side of the machine. The distribution device 24 is equipped with a controlled distribution member, for example a valve, by means of which a determined part of the purified ballast, corresponding to the depth of excavation and to the desired height of the new ballast, is deflected in the hopper 25, while the rest of the ballast flows into hopper 26.

Un dispositif de levage des voies 31, connu en soi, fixé au châssis 2, immédiatement devant l'emplacement d'excavation, est agencé pour soulever au besoin les rails 6 avec leurs traverses 7 pour permettre à la chaîne excavatrice 10 de travailler dans le cas d'excavation de faible profondeur. Des dispositifs connus de levage 32 permettent d'ajuster la hauteur de travail de la chaîne excavatrice 10.A track lifting device 31, known per se, fixed to the chassis 2, immediately in front of the excavation location, is arranged to lift the rails 6 with their cross members 7 if necessary, to allow the excavator chain 10 to work in the shallow excavation. Known lifting devices 32 make it possible to adjust the working height of the excavator chain 10.

La construction et la disposition des deux cribles vibrants 16 et 17 sont représentées plus en détail, mais schématiquement aux figures 2 à 4. Selon la figure 2, dans laquelle sont représentés également le ruban transporteur supérieur 14 et le ruban inférieur d'évacuation 28, le ballast à épurer tombe du ruban transporteur 14 en direction de la flèche recourbée dans l'entrée du crible à l'extrémité gauche du dessin. Le premier crible 16, qui présente un tamis supérieur 40 et un tamis inférieur 41, n'est pas situé exactement dans le prolongement du second crible 17, muni d'un tamis supérieur 42 et d'un tamis inférieur 43, mais il est légèrement décalé verticalement relativement au second crible 17, de telle sorte que la sortie du premier crible 16, c'est-à-dire les bords des tamis 40 et 41, recouvre légèrement et respectivement les extrémités supérieures des tamis 42 et 43 du crible 17, avec un jeu bien entendu suffisant pour que les deux cribles ne viennent pas en contact lorsqu'ils vibrent, le ballast quittant les tamis 40 et 41 tombant ainsi directement sur les tamis 42 et 43 respectivement. Les deux cribles vibrants 16 et 17 sont supportés de chaque côté, librement oscillant, par des ressorts hélicoïdaux 21, respectivement 22 supportés eux- mêmes par les supports 18, 19 et 20. Au lieu de ressorts hélicoïdaux il est possible d'utiliser des blocs de caoutchouc. Le support antérieur 18 et le support postérieur 20 sont équipés de dispositifs de levage 52, respectivement 53 permettant de modifier leur hauteur et partant l'inclinaison individuelle de chacun des cribles 16 et 17, en agissant sur leurs extrémités opposées, la hauteur des extrémités superposées des deux cribles étant fixe.The construction and arrangement of the two vibrating screens 16 and 17 are shown in more detail, but diagrammatically in FIGS. 2 to 4. According to FIG. 2, in which the upper conveyor belt 14 and the lower discharge ribbon 28 are also represented, the ballast to be purified falls from the conveyor tape 14 in the direction of the curved arrow in the entrance of the screen at the left end of the drawing. The first screen 16, which has an upper screen 40 and a lower screen 41, is not located exactly in line with the second screen 17, provided with an upper screen 42 and a lower screen 43, but it is slightly vertically offset relative to the second screen 17, so that the outlet of the first screen 16, that is to say the edges of the screens 40 and 41, covers slightly and respectively the upper ends of the screens 42 and 43 of the screen 17, with a clearance of course sufficient so that the two screens do not come into contact when they vibrate, the ballast leaves both the screens 40 and 41 thus directly falling on the screens 42 and 43 respectively. The two vibrating screens 16 and 17 are supported on each side, freely oscillating, by helical springs 21, respectively 22 supported themselves by the supports 18, 19 and 20. Instead of helical springs it is possible to use blocks rubber. The front support 18 and the rear support 20 are equipped with lifting devices 52, respectively 53 allowing their height to be modified and therefore the individual inclination of each of the screens 16 and 17, acting on their opposite ends, the height of the superimposed ends of the two screens being fixed.

Les parois latérales de chaque crible 16 et 17 sont traversées, approximativement en leur milieu, par un arbre 44, respectivement 45, dont les extrémités portent un balourd 46, respectivement 47, entraîné en rotation par un moteur 48, respectivement 49 par l'intermédiaire d'une courroie 50, respectivement 51.The side walls of each screen 16 and 17 are crossed, approximately in the middle, by a shaft 44, respectively 45, the ends of which carry an unbalance 46, respectively 47, driven in rotation by a motor 48, respectively 49 via a belt 50, respectively 51.

La figure 3 représente, dans sa moitié inférieure, une vue de dessus des tamis supérieurs 41 et 42 et dans sa moitié supérieure une vue des tamis inférieurs 41 et 42. Le recouvrement des tamis est assuré par un prolongement 40a, respectivement 41a, du tamis proprement dit 40, respectivement 41. Des tôles déflectrices 54 du tamis supérieur 42 du crible 17 (fig. 3 et 4) dévient de côté les matériaux trop gros à évacuer, de telle sorte qu'ils peuvent tomber, de chaque côté de la zone médiane occupée par la sortie du tamis inférieur 43, sur le ruban transporteur d'évacuation 28, sur lequel tombent également les matériaux ayant traversé les tamis inférieurs 41 et 43. Le tamis inférieur 43 du crible 17 présente à son extrémité côté sortie une tôle déflectrice 55 dirigée vers l'intérieur, qui dirige le ballast à réutiliser vers une trémie 56 par laquelle il tombe sur le ruban transporteur 23, comme représenté schématiquement à la figure 2. Comme ceci ressort des figures 3 et 4, la largeur de la trémie 56 montée dans la zone médiane de la sortie du crible est inférieure à la largeur du tamis supérieur 42 d'une valeur telle que le gros déchet évacué du tamis supérieur peut tomber de chaque côté de la trémie 56 sur le ruban transporteur d'évacuation 28.FIG. 3 represents, in its lower half, a top view of the upper screens 41 and 42 and in its upper half a view of the lower screens 41 and 42. The screens are covered by an extension 40a, 41a respectively, of the screen proper 40, respectively 41. Baffle plates 54 of the upper screen 42 of the screen 17 (fig. 3 and 4) deflects aside the materials too large to be evacuated, so that they can fall, on each side of the zone median occupied by the outlet of the lower screen 43, on the evacuation conveyor belt 28, onto which also fall the materials having passed through the lower screens 41 and 43. The lower screen 43 of the screen 17 has at its end on the outlet side a deflector plate 55 directed inwards, which directs the ballast to be reused towards a hopper 56 by which it falls on the conveyor belt 23, as shown diagrammatically in FIG. 2. As can be seen from FIGS. 3 and 4, the width of the hopper 56 mounted in the central area of the screen outlet is less than the width of the upper screen 42 by a value such that the large waste discharged from the upper screen can fall on each side of the hopper 56 onto the conveyor belt. evacuation 28.

A la figure 4, qui montre une vue frontale, côté sortie, du crible, le ruban transporteur 14, le ruban d'évacuation 28, les moteurs d'entraînement des cribles 48 et 49, ainsi que les supports 18, 19 et 20 n'ont pas été représentés. Les courroies d'entraînement 51 et 52, entraînant les arbres 44 et 45, sont représentées en coupe. Dans la partie supérieure de cette figure 4 on distingue le tamis supérieur 40 du crible 16, en-dessous de celui-ci le tamis supérieur 42 du crible 17 et plus bas, au niveau de la trémie 56, le tamis inférieur 43 du crible 17.In FIG. 4, which shows a front view, on the outlet side, of the screen, the conveyor belt 14, the discharge ribbon 28, the screen drive motors 48 and 49, as well as the supports 18, 19 and 20 n have not been represented. The drive belts 51 and 52, driving the shafts 44 and 45, are shown in section. In the upper part of this figure 4 there is the upper screen 40 of the screen 16, below it the upper screen 42 of the screen 17 and lower, at the hopper 56, the lower screen 43 of the screen 17 .

- L'agencement des cribles présente l'avantage que chacun des cribles 16 et 17 peut être entraîné individuellement et en ce que pour chacun des cribles des masses relativement petites doivent être accélérées et maintenues en mouvement. L'entraînement individuel au moyen de deux moteurs indépendants 48 et 49 exclut pratiquement une vibration synchrone des deux cribles 16 et 17, de sorte qu'en général les forces qu'engendre chacun des cribles sur le bâti 1 de la machine se neutralisent plus ou moins, avantageusement. L'agencement présente en particulier l'avantage de permettre de commander séparément les deux cribles vibrants, de telle sorte que lors de la mise en route, il est possible d'enclencher tout d'abord le second crible 17, puis, après un certain temps, par exemple 30 secondes environ, d'enclencher le premier crible 16. Inversement, lorsque la machine doit être arrêtée, le premier crible 16 est arrêté, puis après un certain temps, par exemple 30 secondes environ, le second crible 17 est arrêté à son tour. Dans les deux cas les masses à accélérer, respectivement à freiner, sont moitié moins grandes que dans les installations connues comportant un seul crible, ce qui est particulièrement important lorsque les cribles travaillent à pleine charge. Les sollicitations du châssis sont réduites. D'autre part, deux cribles plus petits et plus légers peuvent travailler avec des amplitudes d'oscillations plus grandes et/ou une fréquence d'oscillations plus élevée qu'un seul crible avec une charge correspondante. Jusqu'ici l'amplitude maximale d'oscillation était en général de l'ordre de 12 mm, alors qu'elle peut être de l'ordre de 16 mm avec l'installation selon l'invention. Il est ainsi possible d'atteindre un rendement de criblage de l'ordre de 1 000 m3/h alors que ce rendement était antérieurement de l'ordre de 800 m3/h.- The arrangement of the screens has the advantage that each of the screens 16 and 17 can be driven individually and in that for each of the screens relatively small masses must be accelerated and kept in motion. Individual training by means of two independent motors 48 and 49 practically excludes a synchronous vibration of the two screens 16 and 17, so that in general the forces generated by each of the screens on the frame 1 of the machine more or less neutralize each other. less, advantageously. The arrangement has in particular the advantage of making it possible to control the two vibrating screens separately, so that during startup, it is possible to switch on first the second screen 17, then, after a certain time, for example about 30 seconds, to switch on the first screen 16. Conversely, when the machine has to be stopped, the first screen 16 is stopped, then after a certain time, for example about 30 seconds, the second screen 17 is stopped in turn. In both cases the masses to be accelerated, respectively to be braked, are half as large as in known installations comprising a single screen, which is particularly important when the screens are working at full load. Chassis stresses are reduced. On the other hand, two smaller and lighter screens can work with larger amplitudes of oscillation and / or a higher oscillation frequency than a single screen with a corresponding load. Until now, the maximum amplitude of oscillation has generally been of the order of 12 mm, whereas it may be of the order of 16 mm with the installation according to the invention. It is thus possible to reach a screening yield of the order of 1000 m 3 / h whereas this yield was previously of the order of 800 m 3 / h.

En outre, les deux cribles 16 et 17 de l'installation selon l'invention peuvent être, au besoin, entraînés à des fréquences différentes et/ou avec des amplitudes différentes. Il est en outre possible, au besoin, de donner une inclinaison différente à chacun des cribles 16 et 17. L'installation de criblage selon l'invention permet donc non seulement de construire des cribles vibrants plus petits que jusqu'ici, mais permet également un entraînement individuel des cribles, tant en ce qui concerne la fréquence et l'amplitude d'oscillation que l'inclinaison, en fonction de la nature du ballast à épurer et des conditions de travail, ce qui permet d'atteindre un rendement optimal.In addition, the two screens 16 and 17 of the installation according to the invention can be, if necessary, driven at different frequencies and / or with different amplitudes. It is also possible, if necessary, to give a different inclination to each of the screens 16 and 17. The screening installation according to the invention therefore not only makes it possible to build vibrating screens smaller than hitherto, but also allows individual screen training, both in terms of frequency and amplitude of oscillation and inclination, depending on the nature of the ballast to be cleaned and the working conditions, which allows optimum performance to be achieved.

L'invention n'est pas limitée à la forme d'exécution représentée, mais s'étend à de nombreuses variantes, en ce qui concerne l'exécution et la disposition des cribles vibrants. Ceux-ci peuvent notamment présenter plus de deux tamis superposés. Il est également possible de prévoir plus de deux cribles montés l'un derrière l'autre, mais il semble que deux cribles sont suffisants, pour des raisons pratiques et économiques, pour obtenir les avantages recherchés.The invention is not limited to the embodiment shown, but extends to many variants, as regards the execution and the arrangement of the vibrating screens. These can in particular have more than two superimposed sieves. It is also possible to provide more than two screens mounted one behind the other, but it seems that two screens are sufficient, for practical and economic reasons, to obtain the desired advantages.

Claims (5)

1. Railway ballast cleaning machine adapted to travel on rails, with a vibrating screen arrangement (15) for cleaning the ballast, preferably with two spaced superposed perforated bottoms (40, 41), and with belt conveyors (13, 14, 28, 29) for transporting the ballast and the waste, characterized in that the vibrating screen arrangement (15) comprises at least two vibrating screens (16, 17) mounted in series and independently of each other to the machine frame (1) and each being driven by its own drive means (48, 49), said drive means are adapted to be controlled independently of each other and to be cut on and cut off successively.
2. Machine according to claim 1, characterized in that the outlet end of the perforated bottom or bottoms (40, 41) of one vibrating screen (16) overlaps the inlet end of the perforated bottom or bottoms (42, 43) of the following vibrating screen (17).
3. Machine according to claim 1 or 2, characterized in that lifting devices (52, 53) for the separate adjustment of the slope of each vibrating screen (16, 17) are provided.
4. Machine according to any of claims 1 to 3, characterized in that the vibrating screens (16, 17) are operable with different vibration amplitudes and/or different vibration frequencies.
5. Machine according to any of claims 1 to 4, comprising two vibrating screens mounted in series, characterized in that a lifting device (52) for the first vibrating screen (16) is disposed in the area of its inlet end and that a lifting device (53) for the second vibrating screen (17) is disposed in the area of its outlet end.
EP82200186A 1981-03-02 1982-02-17 Ballast cleaning machine running on tracks Expired EP0059500B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82200186T ATE9917T1 (en) 1981-03-02 1982-02-17 RAIL MOBILE GLE I BED CLEANING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1370/81 1981-03-02
CH1370/81A CH651869A5 (en) 1981-03-02 1981-03-02 TRACK CLEANING MACHINE MOVABLE ON RAILS.

Publications (2)

Publication Number Publication Date
EP0059500A1 EP0059500A1 (en) 1982-09-08
EP0059500B1 true EP0059500B1 (en) 1984-10-17

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EP (1) EP0059500B1 (en)
JP (1) JPS57158402A (en)
AT (1) ATE9917T1 (en)
CH (1) CH651869A5 (en)
DE (1) DE3260980D1 (en)
ZA (1) ZA821116B (en)

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CN102154963A (en) * 2010-02-11 2011-08-17 襄樊金鹰轨道车辆有限责任公司 Construction machine for replacing ballasts of rail

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AT375426B (en) * 1982-09-20 1984-08-10 Plasser Bahnbaumasch Franz FOERDER- OR ROOM CHAIN ARRANGEMENT FOR A TRACKING MACHINE
AT374847B (en) * 1982-09-20 1984-06-12 Plasser Bahnbaumasch Franz Ballast bed cleaning machine with sieve system
IT1168813B (en) * 1983-08-05 1987-05-20 Sergio Valditerra RAILWAY MASSIVE REGENERATION MACHINE
AT380497B (en) * 1983-12-22 1986-05-26 Plasser Bahnbaumasch Franz TRACK CONSTRUCTION MACHINE WITH SCREENING SYSTEM FOR SCHUETTGUT, SCHOTTER AND THE LIKE
IT1187567B (en) * 1985-05-24 1987-12-23 Danieli Off Mecc RENOVATOR FOR GALLERIES
DK0499016T3 (en) * 1991-02-12 1995-05-22 Plasser Bahnbaumasch Franz Cleaning machine
IT1248221B (en) * 1991-03-29 1995-01-05 2C 2M Di Morara Claudio E Menz RAILWAY MASSIVE SCREENING MACHINE.
DE19808956C1 (en) * 1998-03-03 1999-09-23 Wiebe Hermann Grundstueck Movable track construction machine
DE102013101074B4 (en) * 2013-02-04 2020-12-31 Erika Schneider Modular screening device for gravity-assisted cleaning of track ballast removed from below the screening device

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Publication number Priority date Publication date Assignee Title
CN102154963A (en) * 2010-02-11 2011-08-17 襄樊金鹰轨道车辆有限责任公司 Construction machine for replacing ballasts of rail
CN102154963B (en) * 2010-02-11 2014-07-23 襄樊金鹰轨道车辆有限责任公司 Construction machine for replacing ballasts of rail

Also Published As

Publication number Publication date
ZA821116B (en) 1982-12-29
ATE9917T1 (en) 1984-11-15
JPS57158402A (en) 1982-09-30
CH651869A5 (en) 1985-10-15
DE3260980D1 (en) 1984-11-22
EP0059500A1 (en) 1982-09-08
JPH0129922B2 (en) 1989-06-15

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